Nicholson, R. (1989). School management: The role of the secondary headteacher. Kogan.
Chicago-čujuhus (17. p.)Nicholson, Richard. School Management: The Role of the Secondary Headteacher. London: Kogan, 1989.
MLA-čujuhus (9. p.)Nicholson, Richard. School Management: The Role of the Secondary Headteacher. Kogan, 1989.
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